Furnace-door frame.



L. L. KNOX.

PURNACE DOOR FRAME.

APPLIOATION FILED 1111.10.1914.

Patented Nov.

ifl. .0| l:

2. 1C. www, H

WITNESSES had to the Y hns enteren etienne menne onnon.

LUTHER L. KNOX, oF'AVALoN,

WELDED STEEL COMPANY, or PENNSYLVANIA.

Ll Hilft-29.

Application tiled January 10. 1914.

'o//Z/ i/I/,o/r it 122m/ foncer/i:

Be it known that l, Ln'runn L. KNOX, n eitif/.en ol the United States, :ind n resident ot' Avallon, in the county of \lle,frheny :rnd h'tnte ot' Pennsylvania, have invented n new :intl nselul injvn'ovement in l `nrinnrelloor li'rnines, o1'r which the fiillowing is n, full. elettr, :unl exact description. reference being :icconipnnying (lrnwings. l'ornr ing port of this specilicntion, in which- .Figure ,l is n. View partly in front elemtion und partly in vertiezil section ot' n t'urnzice door lrnine embodying Inj.' invention; sire. sections tnlten, respeetively, on the line ll--ll :intl lll-lll of Fig. l.

My invention hns relntifnl to l'urnnee loor frnines. :ind more pnrtienhirly to hollow wilter-coolwl sheet rnetzll lrnrnen.

The. object ol' nii' invention is to :t Atf1-nine ol' this clnirneter. which in .simple in construction, in which the welded eo'nneetions'.l :1re locnterl :it :l rlistnneel'ron'i the door openintl through the l'rinne. nnil whii-h is forint-(l in sections so tlnit in onse of l'nilure. any pnrtionlzir section cnn he reinow-l :1nd rephieefl without renewing or replacingr th(l entire treme.

In the pnrtienlnr ei'nlunliinent ol' my invention which l here illustrated in the ne conipnirving drawings und which will now be described, the .strnetnre ronsists ol' the two verticnl leg incnihers4 L ninl the upper or lintel member 2i. lIlnrh ol' the. len' members itsl boilj.' portion prel'ernbl)y foi-ined of :i single nheet or blnnlc ol' inetnl bent into snbstnntinll \y the loi-1n shown in Pross section in Fig. 5".. :ind closefl :it the top nml bottoni by nieilns` olI enil plnleei l. welded to the free edges ol' the blnnlc. They tree edges ot" the l o(l \-forming;l blnnli irre wehletl togfflther :it the outerVl'orwni'fl corner thereof. inrlirnteil :it .7. lret'ernbly. ent-l blnnl: is l'orined with the hollow forwnrll oils-set t3, whof-ae inner relrnl :nir- 'lfnee l' nete'. :is n door ,enilhn lLn-h leg' i1, nino prel'einhl)Y Vl'orineol with the ontnnrillj' olli-'el shoulder l, :it the lop olI the rloor opening. tr; 'torno n support lor the lini'el ineinlwr I. TliLf-rlintel nieinher hns itsI hoilr portion formell Vl'roin :i .single [hat hlnnl.l lient np wnrdly on pnrnllel lines` into snhsinnli:|ll llshzlpe, und olosed nt the top lip' n phite or strip il, welded or otherwise uniterl to the free edges thereof. 'l`he side-i ol' the provide PENNSYLVANIA, ASSIGNOR TO KNOX PRESSED Se, OI` PITTSBURGH, PENNSYLVANIA, A CORPORATION FURNACE-DOOR .t RAME.

Specilcn tion ol' Letters Patent.

Pntented Nov. 24, 1914. semi No. euses.

thus constructed are formed by bending in# wnrdly and bnckwnrdly the edges of the front member of the U-shaped blank, as shown :it l0 in Fig. I3, und welding the edges ol' these intnrned portions to the back memhcr ol' the blank. :is indicated nt 11y The l'ree edges 1ll of the back member of the bhinlt extend freely beyond these inturned portions or flanges l() und engage the rear portions of the legs :2, to prevent. displace- Inent ot the niernber 3 relatively to the legs. lrel'ernhly. the reni' sides of the legs are inset slightly, :is shown :it 12 in Fig. 3, to forni seats for the projecting flanges 1l.

.\.n v suitnble means muy be prorided for obtninirngr water eirenlntion through -the strut-tore. For this purpose, I have shown ent-h lee' :is having :i supply pipe 13, extending;r clon'nvfiirdly therein from the upper end nml terinirnitiner nt n point near the bottom ol' the leg. One of these supply pipes has a .nlverl brunch l-l, which extends downwardly into the portion il, :1nd terminzttes at the lower portion thereof in n horizontal :srin 1.7. pro\iileil with :1 series of spray perl'orntions lo nt its lower side. Euch of the legs is :also I'n-m'irled with :in outlet connection 1T :it its npper end. The, lintel portion :liso hns nn outlet conneetiim 18, lending l'rorn the onter portion thereof :1nd pre'fel'f nhly into one oll the ontlet connections 17; 'l'he connections nnijv he provided with suitnhle v'ilres. :is infliented, l'or controlling the ci? ...'LOH.

nill he noteil thnt the portions of the inrniifers E. .2 :unl f1. whit-h l'oi'n' the edges oll the floor opening in the l'rnine. :1re 0f ronlinuons nietnl. l'ree 'roin senins. :unl that the wehls nre locnteil nt points rlistnnt from this opening. This l'enture. which is more lull)l rlewrihefl :unl rlniinerl in nr f'opendine' npplii-:ition Fernl No. ell-2W. lilerl of eren hiliherewith. prevents :any (longer of the nehir-ll connectionsheingr injured or opened lo. eontnrt with the charging zipperelu;- or other tools introllueed into the furnace thwuieh the iloor opening. It will also be rendit;` innleretoofl thnt. in case of failure ot either ol' the legr portions 01' 0f the lintel portion. snr-h portion'enn be removed and n-phuwl hy rhsronneeting the waiter-circo- 5.1i ine' eonneetions nnd without the necessity ot reni-n inn' the structure ns n whole.

Vnrionn rhnne'es cnn he made in the detnlol ronstrneton and 'arrangement ofthe fand scope of my invention.

from the spirit Thus, i may provide any suitable system of water-Cireulating connections; the lintel portion may have either e straight or arched bottom;

and various other changes may be made.

- I claim:

1. A hollow Water cooled furnace. door frame, comprising a lintel portion and ver tical 'leg' members upon which the lintel. portion is supported, said 'portion and each oi said members being formed of sheet metal bent to form and Welded, the welds in the leg members being at points distant from the door opening between their lower portions, and the lintei portion having an integral bottom Wall free 'from Welds sind 'forming the top of the door opening; substentially as described.

2. A. hollow water-cooled sheet metal door frame, comprising vertical leg members and e lintel portion supported thereon, the lintel portion having a back plate formed with laterally Aextending portions Awhich engage the back of the leg members, substantially parts, without departing as described.

3. .A furnace Adoor frame, comprising sep arable lintel. and leg Int-rebelsj the lintel member having its body portion formed from a sheet metal blank bent into U-shape and one member of' the U having its edge portions bent toward and secured 'to the other member of the rLl to form the side portions of the body9 substantielly'as described.

4. A hollow water-cooled sheet metal door treme having a .lintel portion Whose body is formed of a continuous sheet of metal bent into U-form. the edge portions of one member of the U being also bent at suistantially' right angles and securedto the other inember to form the side walls of the body, sub stantielly described.

A hollow Water-cooled sheet metal door frame, having a lintel portion Whose body is 'formed o'f a continuous sheet of met-el bent into "Li-form, the edge portions o one member oi the U being also bent at substantially right angles and secured to the other member to form the side walls of the body, and said other member of the U having its free edges extending laterally beyond seid side Walls,`substantially described. l

in testimol'xy whereof, i. have hereunto set my bend.

LUTHER L. iii 0X.

7ldfitifiesses 

